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Hearing Loss

Warns of the hazards loud sounds present and how to protect yourself from them.

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Too Much Noise

At what volume will you lose hearing?

Credit: Patrick Permien
Source: http://commons.wikimedia.org/wiki/File:Bell407_GNU-FDL.jpg
License: CC BY-NC 3.0

[Figure1]

You are on a long car drive and your little sister begins to wail, so you turn up the volume of your music hoping to drown out the noise. After five minutes, she hasn’t stopped crying and you are getting a headache. You scream at your sister to be quiet and your mom scolds you for being mean to her, saying, “Just ignore it!”. You reply telling her how it is going to hurt your hearing, but doesn’t believe you. At one point, though, would your sister's crying actually damage your hearing?

Creative Applications

  1. If the sound level in a quiet room is about 40 dB, predict what the level of your sister’s crying is.

  2. After an hour in a helicopter you risk hearing damage. How long do you think it would take to risk hearing damage from your sister's crying?

  3. Think of another object and predict whether or not you would risk hearing damage from it. Examples: firecracker, lawnmower, traffic, vacuum cleaner

 Resources

http://www.starkey.com/hearing-loss-and-treatment/learn-about-hearing-loss/hearing-loss-prevention

Image Attributions

  1. [1]^ Credit: Patrick Permien; Source: http://commons.wikimedia.org/wiki/File:Bell407_GNU-FDL.jpg; License: CC BY-NC 3.0

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